<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>文件上传</title>
  </head>
  <body>
    <form action="update.php" method="POST" enctype="multipart/form-data">
      <fieldset><input type="file" name="icon" multiple="multiple" accept="image/png,image/gif" /></fieldset>
      <button>保存</button>
    </form>
  </body>
</html>
